Mold for casting lock-nuts



(No Model.)

A. M. HOUSE. MOLD FOR CASTING LOCK NUTS.

Patented Sept. 26, 1893.

UNITED STATES PATENT OFFICE.

ALBION M. ROUSE, OF BOULDER, ASSIGNOR TO THE BOSS-GRIP LOCK-NUT COMPANY,OF DENVER, COLORADO.

MOLD FOR CASTING LOCK-NUTS.

SPECIFICATION forming part of Letters Patent No. 505,778, datedSeptember 26, 1893.

Application filed October 22, 1892.

To all whom it may concern.-

Be it known that I, ALBION M. HOUSE, of Boulder, in the county ofBoulder and State of Colorado, have invented a certain new and usefulImprovement in Molds for Casting Look-Nuts, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specification.

My invention relates to an improved mold for casting lock-nuts; and myinvention consists in features of novelty hereinafter fully describedand pointed out in the claims.

Figure I is a perspective view of my improved lock-nut. Fig. II is asection, taken on line IIII, Fig. IV, showing one half of the mold inelevation, showing the nut after it has been cast, in elevation. Fig.III is a section taken on line III-III, Fig. IV. Fig. IV is a top view.Fig. V is a section taken on line V-V, Fig. II; and Fig. VI is a sectiontaken on line VIVI, Fig. II.

Referring to the drawings, 1 represents a mold formed in two pieces,the-dividing line being shown at A, Fig. IV, and the two parts beingheld together by suitable dowel pins 2, which permit of their readyseparation.

3 represents a core having a threaded portion 4:, which forms the threadin the nut, and in the conical extension of the nut. The mold isprovided with one or more perforations 5, through which the molten metalis poured to form the nut in the mold, these perforations having upperenlargements 6, so that the metal can be readily poured in.

At the lower ends of the perforations 5, the mold has an interiorchamber or portion 5 to form a flange or washer 7 on the nut. Be-

neath this portion 5 the mold has a chamber or portion 8, withvertical-walls, in which the body 9 of thenut is formed. Beneath theportion or chamber 80f the mold, there is a chamber or portion from 10to 11 which forms Serial No. 449,686. (No model.)

a conical end 12 on the nut. In this latter portion of the mold areplaced wings 13, which form slots or perforations 14. in the conicalportion of the nut, these wings being secured to or formed upon the moldso as to be part thereof.

As shown in Fig. III, the core 3 decreases in size from the point Bdownwardly, the re sult being that the interior diameter of the conicalportion 12 of the nut is smaller than the interior diameter of the bodyof the nut, for the purpose of producing an elastic pressure betweenthis portion of the nut and the bolt on which the nut is screwed asfully explained in my application for a patent on the nut itself, whichapplication is filed of eve date herewith, Serial No. 449,688.

By the use of a mold of this character, lock nuts can be very cheaplyand quickly produced.

I claim as my invention 1. A mold for forming lock nuts, made in twoparts, and having a chamber 5 for forming a flange on the nut,achamberSfor forming the body of the nut, a chamber 10 for forming theconical portion of the nut, and wings 13 for forming openings in theconical portion of the nut, in combination with a.

ALBION M. ROUSE.

In presence of- S. J. THORNE, A. (3. Room.

